r293231 - Re-apply r292662, "IRGen: Start using the WriteThinLTOBitcode pass."

[Peter Collingbourne via cfe-commits]

Author: pcc
Date: Thu Jan 26 17:51:50 2017
New Revision: 293231

URL: http://llvm.org/viewvc/llvm-project?rev=293231&view=rev
Log:
Re-apply r292662, "IRGen: Start using the WriteThinLTOBitcode pass."

The internal build issue has been resolved.

Added:
    cfe/trunk/test/CodeGenCXX/type-metadata-thinlto.cpp
Modified:
    cfe/trunk/lib/CodeGen/BackendUtil.cpp
    cfe/trunk/test/CMakeLists.txt

Modified: cfe/trunk/lib/CodeGen/BackendUtil.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/BackendUtil.cpp?rev=293231&r1=293230&r2=293231&view=diff
==============================================================================
--- cfe/trunk/lib/CodeGen/BackendUtil.cpp (original)
+++ cfe/trunk/lib/CodeGen/BackendUtil.cpp Thu Jan 26 17:51:50 2017
@@ -684,9 +684,11 @@ void EmitAssemblyHelper::EmitAssembly(Ba
     break;
 
   case Backend_EmitBC:
-    PerModulePasses.add(createBitcodeWriterPass(
-        *OS, CodeGenOpts.EmitLLVMUseLists, CodeGenOpts.EmitSummaryIndex,
-        CodeGenOpts.EmitSummaryIndex));
+    if (CodeGenOpts.EmitSummaryIndex)
+      PerModulePasses.add(createWriteThinLTOBitcodePass(*OS));
+    else
+      PerModulePasses.add(
+          createBitcodeWriterPass(*OS, CodeGenOpts.EmitLLVMUseLists));
     break;
 
   case Backend_EmitLL:

Modified: cfe/trunk/test/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CMakeLists.txt?rev=293231&r1=293230&r2=293231&view=diff
==============================================================================
--- cfe/trunk/test/CMakeLists.txt (original)
+++ cfe/trunk/test/CMakeLists.txt Thu Jan 26 17:51:50 2017
@@ -88,6 +88,7 @@ if( NOT CLANG_BUILT_STANDALONE )
     llvm-bcanalyzer
     llvm-cat
     llvm-dis
+    llvm-modextract
     llvm-nm
     llvm-objdump
     llvm-profdata

Added: cfe/trunk/test/CodeGenCXX/type-metadata-thinlto.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenCXX/type-metadata-thinlto.cpp?rev=293231&view=auto
==============================================================================
--- cfe/trunk/test/CodeGenCXX/type-metadata-thinlto.cpp (added)
+++ cfe/trunk/test/CodeGenCXX/type-metadata-thinlto.cpp Thu Jan 26 17:51:50 2017
@@ -0,0 +1,11 @@
+// RUN: %clang_cc1 -flto=thin -flto-unit -triple x86_64-unknown-linux -fvisibility hidden -emit-llvm-bc -o %t %s
+// RUN: llvm-modextract -o - -n 1 %t | llvm-dis | FileCheck %s
+
+// CHECK: @_ZTV1A = linkonce_odr
+class A {
+  virtual void f() {}
+};
+
+A *f() {
+  return new A;
+}